Last year's Beethoven Festival continued well after the San Antonio Symphony had moved on. Sebastian Lang-Lessing, the symphony's music director and curator for its annual festivals, didn't want a repeat of that for this year's Brahms Festival: “I wanted the symphony to finish the festival,” he said. That happens this weekend. The symphony will give three concerts: Friday's program holds Symphony No. 3 and the Brahms Violin Concerto, featuring guest violinist Vadim Gluzman (above); Gluzman returns Saturday to play the Brahms Double Concerto for Violin and Cello with guest cellist Jian Wang for a program that also holds Symphony No. 4. On Sunday, the symphony will give the No. 4 one more spin as part of the Discover concert series. The Sunday concerts are more informal, and include a discussion of the work by Lang-Lessing.